VERTEBRAL OSTEOSYNTHESIS EQUIPMENT

摘要

This equipment includes bony anchoring members, one or two linking rods (2), intended to be connected to these anchoring members and to be attached to the vertebrae by dint thereof, parts (3) for connecting this (these) linking rod(s) (2) to these anchoring members, and clamping means, such as nuts (4), for locking the linking rod(s) (2) in said connecting parts (3) ; at least one anchoring member is of the "polyaxial" type, i.e. comprises one proximal stud (5) articulated with respect to a body (6) intended for gripping a vertebra. According to the invention, - the proximal stud (5) of said polyaxial anchoring member exhibits an articulation head (11) in the form of a spherical cap ; and said body (6) of this anchoring member comprises a cavity (16) intended for accommodating this articulation head (11) and a wall (17) surrounding this cavity (16), this wall (17) being crimped around said articulation head (11).